US3671009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-controlling valve
Assignee: Parker Hannifin Manufacturing Switzerland SA
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Filing: 1970-03-20
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Granted: 1972-06-20
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Expires: 1990-03-20
Abstract
Abstract An electromagnetically controlled valve, wherein the closuremember is connected with the movable core of the controlling electromagnet in a simple and smooth manner by means of a coupling the members of which are rigid respectively with the core and with the closure-member, one of said members housing with a clearance the other member and defining with the latter a space inside which an O-ring is held with an axial clearance. Said O-ring fitted in an annular groove extending outwardly of the housing transmits the motion of the core to the closuremember so as to raise it off its seat.
Inventors
- 👤 Harald Stampfli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:20
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K1/00; F16K1/32; F16K1/34; F16K1/42; F16K1/48; F16K1/482; F16K1/485; F16K31/12; F16K31/36; F16K31/40; F16K31/402; F16K31/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
292 words
In a fluid-controlling valve comprising a body provided with an input chamber and an output chamber, a closure-member adapted to be shifted axially between a position closing the output chamber with reference to the input chamber and a position allowing said chambers to communicate with each other, an electromagnet including a movable part controlled thereby, coaxial extensions on said movable part and on said closuremember, said coaxial extensions facing each other and forming parts of a coupling, one of which is provided with a housing of generally cylindrical shape and open at one end into which the other one provided with an enlarged head at its free end fits with a clearance, said housing having an annular groove therein, an O-Ring fitted in said groove, the outer diameter of said ORing being larger than the diameter of the opening of the housing, the inner diameter of said O-Ring being smaller than the diameter of said enlarged head, the annular space between said coaxial extensions in the area of said groove being larger than the volume of said O-Ring, thus providing an axial clearance between the parts of said coupling, the cross-section of the annular groove being at least as large as that of the O-Ring and the shape of said groove being such that when one part of the coupling is about to be carried along by the other one, the resultant of the forces exerted by the walls of said groove on the O-Ring is directed obliquely with reference to the axis of the O-Ring while the other part of said coupling is provided with a bearing surface for said O-Ring, the general shape of which is oblique so as to exert on the O-Ring a force opposing that resultant force.
Claim 2
Dependent Claim
292 words
In a fluid-controlling valve comprising a body provided with an input chamber and an output chamber, a closure-member adapted to be shifted axially between a position closing the output chamber with reference to the input chamber and a position allowing said chambers to communicate with each other, an electromagnet including a movable part controlled thereby, coaxial extensions on said movable part and on said closuremember, said coaxial extensions facing each other and forming parts of a coupling, one of which is provided with a housing of generally cylindrical shape and open at one end into which the other one provided with an enlarged head at its free end fits with a clearance, said housing having an annular groove therein, an O-Ring fitted in said groove, the outer diameter of said ORing being larger than the diameter of the opening of the housing, the inner diameter of said O-Ring being smaller than the diameter of said enlarged head, the annular space between said coaxial extensions in the area of said groove being larger than the volume of said O-Ring, thus providing an axial clearance between the parts of said coupling, the cross-section of the annular groove being at least as large as that of the O-Ring and the shape of said groove being such that when one part of the coupling is about to be carried along by the other one, the resultant of the forces exerted by the walls of said groove on the O-Ring is directed obliquely with reference to the axis of the O-Ring while the other part of said coupling is provided with a bearing surface for said O-Ring, the general shape of which is oblique so as to exert on the O-Ring a force opposing that resultant force.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |